Fuse for projectiles.



K. ASAK.

FUSE POR PRUJECTILES.

APPLICATION FILED AUG-.27, 1913.

Patented July 28, 1914,

. able others skilled in UNITED sra'rigs SATENT oFFieE.

KARL ASAK, F RAUFOSS, NORWAY, ASSIG-NOR TO RHEINISCI-IE DIETALLWAAREN-UND MASCHINENFABRIK, 0F DUSSELDORF-DERENDORF, GERMANY, A CORPORA- TIONOF GERMANY.

FUSE FOR PROJECTILES.

Speeication of Letters Patent.

Patented July 28, 1914.

Application filed August 27, 1913. Serial No. 786,923;

. rings, and the Iobject of the invention is to v 'so couple ,l

a fixed timing ring to the body that adjustable rings located onopposite -sides of such ixed ring may be axially turnedz n unisonwithout interfering with.

the fixed ring. This is accomplished by coupling thefixed ring with thebody by means of a plurality of separate elements, such as pins,-disposed in parallelism lwith the axis of the fuse and loosely fitted inopenings in the xed ring, their inne'i` ends taking in recessesin thefuse body. The adjustable rings are fixedly secured to a sleeverotatably mounted on the body, the sleeve having a slotted iange at itsinner end .through which are passed the pins connecting the fixed ringto the body. This flange isprovided with means for displacing some ofthe coupling pins to permit the sleeve and its rings to be completelyrotated in either direction, but the distance apart of the pins is suchthat 'at least one pin connects the fixed timin ring with the fuse bodyin all positions o the sleeve.

In the construction according to the invention shown in the accompanyingdraw ing, Figure his a sectional elevation of the fuse onthe line l-l'ofFig. 3. Fig. 2 is an elevation with parts of the fuse and body removed.Fig. 3 is a cross section and Fig. 4 a diagrammatic view. Figs. 5 and Gare respectively a section through and a plan view of the sleeve. i

Referring to the drawings, the body a of the fuse has a centralprojection or socket b in the outer end of which are mounted atimeplunger c and its priming cap d, the latter being designed to bethrown rearwardly as against the action of a restraining spring e by theinitial impulse on firing, whereupon the priming cap is perforated bythe firing pin The ignition is transmitted in known manner through thechannels g to the time ignition device. At they same time a powderpellet h, which forms a transport and loading safety device for theplunger i of the percussion fuse, is ignited, thus freeing the plunger iso that the priming cap 7c, which is located therein, can be impelled onimpact against the pin Z secured to the fuse body.

The socket b forms a bearing upon which are mounted a plurality o-ftiming rings, the

outermost, m, lbeing rigidly connected with the socket in any preferredmanner. The second ring, n, and the fourth, o, are fixedly secured toand designed to turn with a sleeve p which is loosely mounted on thesocket b, the ring n being keyed to the cylindricalportion of thesleeveand the ring 0 `to an outwardly projecting flange at the inner end ofthe sleeve. The third timing ring, (l, which is relatively stationary,surrounds the sleeve p, but has no connection therewith. This ring whichis coupled to the fuse body by means of pins r, lies between the rings nand' .0. To permit rings fn,

and o to move in unison without uncoupling ring q, the out-turned iangeof the sleeve p, which intersects the plane of the pins r, has segmentalslots s through which the pins extend. These pins at their inner endsfit in shallow recesses in body a, their outer ends taking in holes inring q. The recesses in the body a are part of a circular groove oextending around the body` the portions of the groove between theserecesses being of less width than the diameter of the recesses, but ofthe same depth, thus preventing any relative rotation between the pinsand the fuse body. To allow of uninterrupted turning of the rings n and0, and sleeve p, I provide the Hange of the latter at the points betweenthe segmental slots with opposite projections u having each two beveledsurfaces t which fit in the groove fv, and which in the turning of thesleeve will successively engage the inner ends of pins r and raise themto allow complete turning of the adjustable rings, the pins being liftedfrom one slot and dropped into the other. To permit the pins to beshifted, the ring n, iscut away on its under surface at points in linewith the projections u on the sleeve. It will be observed that by use of a plurality of pins the ring q is at all times coupled with the body,turning of the sleeve and the raising of the pins affecting only aminority of the latter, t-he major portion of the pins remaining incoupling position. The beveled surfaces t being on both sides of theprojections u enable the sleeve to be turned in either direction.

I claim as my invention:

l. A fuse comprising a body, a plurality of relatively movable timingrings, one timing ring being coupled to the body, movable elements foreffecting such coupling, and means for displacing said elements withoutafectin the position of said coupled ring.

2. A use comprising a body, a plurality of timing rings, one timing ringbeing coupled to the body, movable elements for effecting such couplin,sind-'means carried by a mova-ble ring for successively displacing saidelements as said latter ring is rotated.

3. A fuse comprising a body, a plurality of timing rings, onetiming ringbeing coupled to the body, a series of movable pins for effecting suchcoupling, and means carried by a movable ring for successivelydisplacing said pins as said latter ring is rotated.

4. A fuse comprising a body, a plurality of fixed timing rings, aplurality of adjustable timing rings alternately arranged in respect tothe fixed timing rings,a series of coupling elements for locking one ofsaid ixed timing rings to the. body, and means carried by the adjustabletiming rings for displacing said coupling elements as the adjustablerings are rotated.

5. A fuse comprising a. body, a plurality of iixed timing rings, aplurality of adjustable timing rings alternately arranged in respect tothe fixed timing rings, a series of shiftable pins for locking onel ofsaid fixed timing rings to the body, and means carried by the adjustabletiming rings for displacing said coupling pins as the adjustable ringsare rotated.

6. A fuse comprising a body, adjustable timing rings, a fixed timingring interposed between said adjustable rings, shiftable pins 4 ingwitnesses.

for locking the fixed timing ring Vto thel body, a sleeve carrying saidadjustable timing rings, and means carried by said sleeve forsuccessively displacing said pin as said adjust-able rings are rotated.

A fuse comprising a body, adjustable timing rings, a fixed timing ringinterposed between said adjustable timing rings, shiftable pins forlocking the fixed timing ring to the body, a sleeve carrying saidadjustable timing rings, said sleeve having a flange at its inner endformed with slots through which said pins project, and means carried byvsaid sleeve for successively displacing said pins as said adjustablerings are rotated.

8. A fuse comprising a body, adjustable timing rings, a fixed timingring interposed between said adjustable timing rings, shiftable pins forlocking the fixed timing ring to the body, a sleeve carrying saidadjustable timing rings, said sleeve having a iange at its inner endformed with slots through which said pins'project, and also havingbeveled portions for engaging said pins fu' successively unlocking themfrom said body.

9. A fuse comprising a body having a cirj culargroove and spaced-a artrecesses opening into said groove, a xed timing ring, pins carried bysaid fixed timing ring designed to fit into said recesses, inner andouter adjustable timing rings between which said fixed timing ring islocated, a sleeve connecting said adjustable timing rings having aslotted liange at its inner end, and oppositely inclined portionsbet-Ween said slots for fitting in said grooves :and successivelyengaging said pins. v j

ln testimony whereof, I have signedthis specification in the .KARL AsAKLWitnesses:

M. E. GUTLoxENsEY, RUTH LINDs'rRM.

presence of two subscrib-A

